scholarly journals Screening Common Bean (Phaseolus vulgaris L.) Germplasm for Resistance against Angular Leaf Spot (Pseudocercospora griseola) Disease under Field Condition

2019 ◽  
Vol 8 (1) ◽  
pp. 30
Author(s):  
Yayis Rezene ◽  
Shiferw Mekonin
Keyword(s):  
Common Bean ◽  
Field Condition ◽  
Leaf Spot ◽  
Genetic Resistance ◽  
Angular Leaf Spot ◽  
Eastern Africa ◽  
Leaf Spot Disease ◽  
Sources Of Resistance ◽  
The Common ◽  
Pseudocercospora Griseola

Angular leaf spot (ALS) caused by the fungus Pseudocercospora griseola is one of the most destructive disease in Latin America and eastern Africa countries. The fungus, P. griseola is highly variable and a diverse sources of resistance genes is required to manage this economically important disease. The use of genetic resistance is the most practical and economic way to manage angular leaf spot of the common bean. Common bean (Phaseolus vulgarise L.) germplasm were screened for resistance against Angular leaf spot (ALS) under field conditions at Wonodogenet and Areka Research farms. Out of 300 common bean accessions evaluated only 14 (4.6%) common bean accessions were resistant to naturally epidemics of angular leaf spot disease under field condition. Therefore, all common bean germplasm that showed resistance reaction can be involved in breeding program for the improvement of the common bean.

scholarly journals Characterization of the common bean host and Pseudocercospora griseola, the causative agent of angular leaf spot disease in Tanzania

2016 ◽  
Vol 10 (11) ◽  
pp. 238-245 ◽  
Author(s):  
Amos Chilagane Luseko ◽  
Nchimbi-Msolla Susan ◽  
Mbogo Kusolwa Paul ◽  
Gabriel Porch Timothy ◽  
Miryam Serrato Diaz Luz ◽  
...  
Keyword(s):  
Common Bean ◽  
Causative Agent ◽  
Leaf Spot ◽  
Angular Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
The Common ◽  
Pseudocercospora Griseola

Appraisal of common bean farming systems under angular leaf spot disease prone environments of the Southern Highlands of Tanzania

2016 ◽  
Vol 50 (5) ◽  
Author(s):  
Rose Mongi ◽  
Pangirayi Tongoona ◽  
Hussein Shimelis ◽  
Julia Sibiya
Keyword(s):  
Common Bean ◽  
Leaf Spot ◽  
Durable Resistance ◽  
Farming Systems ◽  
Farming System ◽  
Angular Leaf Spot ◽  
Leaf Spot Disease ◽  
Production Constraints ◽  
Pseudocercospora Griseola ◽  
Structured Questionnaire

Angular leaf spot caused by Pseudocercospora griseola is the most destructive disease of common bean (Phaseolus vulgaris L) in the Southern Highlands of Tanzania (SHT). The objectives of this study were to assess the farming system and farmers awareness in the ALS disease prone environments of the SHT. A structured questionnaire was designed to collect information from 238 respondents sampled from Mbeya, Njombe, Iringa and Rukwa regions. Data collected included population demography, production constraints, and indicators of poverty. The results showed that ALS widely occurred in the SHT but farmers were not aware of the disease and sources of inocula. Most of the respondents were poor with average yields of less than 500 kg ha-1. Lack of knowledge on ALS disease and the presence of favorable environmental conditions increased chances of P. griseola proliferation. Therefore, trainings on awareness and intensification of extension services is important. Breeding for durable resistance is an overriding consideration towards increasing bean productivity in the SHT.

Inheritance and development of molecular markers linked to angular leaf spot resistance genes in the common bean accession G10909

2010 ◽  
Vol 28 (1) ◽  
pp. 57-71 ◽  
Author(s):  
George S. Mahuku ◽  
María Antonia Henríquez ◽  
Carmenza Montoya ◽  
Carlos Jara ◽  
Henry Teran ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Common Bean ◽  
Resistance Genes ◽  
Leaf Spot ◽  
Angular Leaf Spot ◽  
The Common

scholarly journals Leaf and canopy reflectance spectrometry applied to the estimation of angular leaf spot disease severity of common bean crops

PLoS ONE ◽  
2018 ◽  
Vol 13 (4) ◽  
pp. e0196072 ◽  
Author(s):  
Víctor Martínez-Martínez ◽  
Jaime Gomez-Gil ◽  
Marley L. Machado ◽  
Francisco A. C. Pinto
Keyword(s):  
Common Bean ◽  
Disease Severity ◽  
Leaf Spot ◽  
Angular Leaf Spot ◽  
Leaf Spot Disease ◽  
Canopy Reflectance ◽  
Reflectance Spectrometry ◽  
Spot Disease

scholarly journals Common bean breeding for resistance to anthracnose and angular leaf spot assisted by SCAR molecular markers

2012 ◽  
Vol 12 (1) ◽  
pp. 34-42 ◽  
Author(s):  
Gilmar Silvério da Rocha ◽  
Luis Paulo Lelis Pereira ◽  
Pedro Crescêncio Souza Carneiro ◽  
Trazilbo José de Paula Júnior ◽  
José Eustáquio de Souza Carneiro
Keyword(s):  
Molecular Markers ◽  
Common Bean ◽  
Leaf Spot ◽  
Plant Architecture ◽  
Colletotrichum Lindemuthianum ◽  
Angular Leaf Spot ◽  
Scar Markers ◽  
Resistant Line ◽  
Genetic Potential ◽  
Pseudocercospora Griseola

The objective of the present study was to assess the genetic potential of inbred carioca common bean families from five populations derived from crossings involving elite lines and a disease-resistant line (Rudá-R), and to assess the efficiency of SCAR molecular markers in selecting plants resistant to anthracnose and angular leaf spot, at the time of bulk formation. Plant architecture, yield and grain type were assessed. Significant effect among families within population was observed, suggesting wide genetic variability for the characters assessed. Twenty-six superior families were selected. The families contained the greatest number of markers, identified by SCAR molecular markers in the F4 generation. Eighteen of these families were resistant to the races 65 and 453 of Colletotrichum lindemuthianum and five were resistant to the race 63.23 of Pseudocercospora griseola. Thus selection assisted by SCAR markers, in the F4 generation, was an important tool in common bean breeding.

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